Machine for forming flexible tubing.



, 71% iwwggm S. SOOGNAMILLO. MACHINE FOR FORMING FLEXIBLE TUBING.

APPLICATION FILED FEB. 27. 1905.

PATENTED NOV. 19, 1907.

2 SHEETS-SHEET 1.

No. 871,241. PATENTED NOV. 19, 1907. S. SCOG-NAMILLO. MACHINE FOR FORMING FLEXIBLE TUBING.

APPLICATION FILED FEB. 27, 1905.

I 2 HEETSSHEI1T 2.

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d azvw%re/d'w zmmlla SALVATORE SGOGNAMILLO, OF NEW YORK, N. Y.

MACHINE FOR FORMING FLEXIBLE TUBING.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed February 27, 1905. Serial No. 247,529.

To all whom it may concern: {:Be it known that I, SALVATORE SCOGNA- MILLo, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Machines'for lowing is a specification.

Forming Flexible Tubing, of which the fol- This invention relates to a machine for forming flexible tubing or metallic spiral hose, and the primary object of the same is to rovide a comparatively simple mechanica organization for longitudinally moving themandre'l or analogous receiving means for the tubing or on which the tubing is formed or completed in contradistinction to machines of this classas heretofore constructed in Which the mandrel remains longitudinally stationary and the feeding means for the several elements or com onents of the tubing -.are movable, the fee ing and bending devices cooperating with respect to the components of the tubing being immaterial and subject to variation or modification. The means for feeding the components of the tubing to the mandrel in this instance remains stationary, and the mandrel by its progressive longitudinal movement receives the tub ing components or elements regularly to spi rally dispose the said components or elements in close interlocked relation, and after the desired length of tubing is completed the means for longitudinally moving the mandrel,

as well as. imparting a rotation thereto are thrown-out of gear or disconnected from the operative mechanism and returned to normalposition, the several components of the elements of the tubing being severedprior to the return of the mandrel and the feeding mechanism fO'BilK-l latter to normal position.

After-the parts are returned to normal position the mandrel is disconnected and detached andthe completed tubing Withdrawn therefromfl and subsequently the mandrel may belaga'in reset for a-further similar op eration.

Inthe drawings, Figure 1 is a side elevation of a machine embodying the features of Fig. 2 is an end elevation looking towards the starting end of the machine. ,Fig. 3 is a transverse vertical section on the line 33, Fig. 1. Fig. i'isa detail elevation showing the mode of a plying. the several components of the tubing to the mandrel.

Similar characters of reference indicate,

corresponding arts in the several views.

The numera 1 designates the machine bed is an upwardly projecting bracket or su port 5, having a front member 6 at a suitab e elevation and projecting over the front side of the frame or bed of the machine be low, said member providing means for receivin the extensions of shafts 7 and 8, of suit ably grooved and ribbed bending rolls 9 and 10, held between uprights 11 and 12 located at the inner extremity of said support, as clearly shown by Fig. 1. The extension of shaft 7 of the lower roll 9 has a sprocket wheel 13 fixed on its outer end, and the outer ends of both the extensions of shafts 7 and 8 have intermeshing gears 14 to'impart to the rolls 9 and 10 a proper motion for feeding the tube component which passes therebetween. The sprocket wheel 13 is engaged by a sprocket chain 15, which also surrounds a sprocket wheel 16 one stub shaft 17, also carrying a main driving sprocket 18, actuated by a chain belt 19, which is actuated by a sprocket 20, on a driving shaft 21.. having bearing in a suitable support 22, held 6 in operative relation to the feed of the tub.

ing component through the roller 9 and 10, said bending anvil being of such form and occupying such osition with relation to the mandrel of whic 1 the tubing is formed as to reliably and accurately insure the interlock of the several components of the tubing of the mandrel, as will be more fully hereinafter specified. The member 6 also has a receptacle or holder 27 applied thereto and projecting outwardly towards the front to strip for interlocking engagement of the suc-' A cessive coils of the strip on the mandrel. Wire 29 and packing strip 30 are fed from suitable reels 31 and 32 upwardly wlth the metallic strip 33 to the mandrel by suitable guide pulleys or rollers 28, the wire 29 and packing strip 30 continually cooperatin with the said metallic strip 33 after the lat ter has been shaped by the rolls 9 and 10. These reels may be suitably applied to the frame or bed of the machine and will have such position as to insure a regular feed of the wire and packing stri with'respect to the man rel, and furthermore, the bending anvil 26 for the metallic strip 33 may be varied in its contour or disposition to accommodate modifications in theformation of thetubing or the bendingof the edges of the successive coils or convolutions of the metallicstrip, as may bedesired. The character of the wire 29 and packing strip 30 is not essential nor is it to be understood that the machine is confined to the formation of any particular construction of tubing.

A carriage 34 moves over the bed 1 of the ,machine and engages a guide rod or cylindrical bar 35 terminally held in the rear edge portion of the bracket or support 5, as at 36, and in a bracket 37 at the opposite end of the bed, said guide rod 35 being located over the rear edge of the bed. The purpose of this guide'rod is to steady the movement of the carriage 34 and always maintain the said.

carriage in proper position on the bed. In

the upper part of the carriage a rotating.

spindle 37 islocated, and has a sprocket wheel 38 fixed thereon. The outer end of the spindle 37 or that gnear'est to the bracket or support 5 has a suitable chuck head39, secured thereon similar to that ordinarily used in a lathe to removably receive the inner terminal of a mandrel 40, which is longitudinally slidable or movable through the guide opening 25 in the-upper portionof the rear member 24 of the bracket or support 5. The chuck head 39 is not limited to any precise structure, but may be varied at will so long as itcan be readily manipulated to grasp or release the end of the mandrel The carriage 34 has an intermediate driving shaft or spindle 4i carrying a worm 42and a sprocket wheel 43, which is connected to the sprocket wheel 38 of the spindle 37 above by 'a chain belt 44. In the lower part of the carriage below the spindle 41, and disposed centrally with respect to the bed 1 is a worm wheel 45, which is held in continualmesh' withthe worm 42 and clears the bed by moving inthe slot 3, as shown by Fig. 3.

carried thereby.

The shaft 46 of the worm, wheel extends transversely through the lower part of the carriage 34, and on. the front extremity has a sprocket wheel-A7, which, is engaged by a chain belt 48, also surrounding a sprocket wheel 49, on the frontprojectedend of a shaft 50, having bearing in a swinging frame 51 fulcrumed on the shaft 46 of the worm wheel. The shaft 50 is rotatable in the free end of theframe 51, and cooperating therewith is apinion 52 adapted to mesh with the rack 4. The rear part of the frame 51 has an upwardly projecting segmental slotted ex tension 53, through which projects a pin or stud 54, held by the carriage and suitably screw threaded to receive a wing or thumb nut 55. To raise and lower the frame 51'the outer free end in rear of the pinion 52 is supplied with a handle or grip device 56. r

The sprocket wheel 47 runs loosely on the shaft46, and is carried, by a clutch member 57, see Fig. 3, which is adapted to interlock with a clutch member 58 splined on the outer eXtremi-typf the shaft. The purpose of this arrangement is to stop the operatiog.

of the movable partsof the carriage at any" time desired during the travel ofsaid car riage over the bed and when found necessary to control a proper formation of the tubing on the mandrel 40, and such cessation of movement of the carriage maybe accomplished by drawing outwardly on the clutch member 58 .to release thesprocket 47 the shaft 46. At other times, for instance, when the carriage is returned to normal position after the tubing is completed on'the; mandrel, the frame 51 is swung upwardly by releasing the thumb nut 55 and said frame can be held elevated'by again tightening the nut and thereby holding the pinion 52'clear 10 of the rack 4. Under this released condition of the carriage the latter may be manually pushed forwardly to the starting point and carry the mandrel therewith, andthe mandrel subsequently released from the chuck head 39,'and the completed tubing detached from such mandrel. drel may be reset for a similar operation.

The mandrel will be rovided with suit- Afterwards the manable openings for receiving the ends of the wire and metallic strip in the starting operation of forming the tubing, it being under stood that the wire is first a plied to the mandrel slightlyin advance 0' the application of the tubing, and after the components at their contiguous edges for after-treatment,

'the machine not being confined-as before 130 In some innotedfto the formation of any specific arrangement oftthe parts of the tubing, nor to anyspecial character of tubing, the essential feature being'the' rovision of mechanism for longitudinally s ing and rotating the mandre and with respect to which the mandrel may be quickly assembled or disassocie i It will be understood that changes in the proportions, dimensions, and minor details may be resorted to without departing from the spirit of the invention.

Havi thus described the invention,

wvhat is c aimed, is

11. In a machine of the class set forth, the combination with devices for feedin components of tubin of .a longitudinal y slidable and rotatab e mandrel disposed to receive said components, a guide means, a carriage movable longitudinally on the guide means and supporting an upper rotating s indle, the latter having means to remova ly engage one end of the mandrel, an operating sha t for the carriage provided with a worm, means-for progressively feeding the carriage and operatively controlled by the worm, and meansfor causing a cessation of movement of the carriage.

2. A machine for formin tubing having devices for feeding and s a ing com odrel to receive the said com orients, a ide rod, a carriage movable on t 'e gu de 1'0 and having a rotatable member engaging one extremity of the mandrel, and mechanism for feeding the carriage lon 'tudinally over the machine and operatin t c said member, the mechanism being under manual control to disengage the carriage and cause a cessation of movement of the arts thereof.

4. In a machine 0 the class set forth, the combination of a bed having a rack thereon, devices for feeding and shaping thecomponent parts of tubing having a fixed osition,

a longitudinally movable and rotate le mandrel to receive the saidcomponents, a guide rod, and a carriage movable on the guide rod and havingca s indle and carryinggear'm ean's and a rotatab e su port, the gear means engaging the rack an the spindle, and the support engaging one extremit of the mandrel.

5. In a machine of the c ass set forth, the combination with a bed havin a rack thereon, devices for feeding and s aping tubing components having a fixed position-on the bed, a guide rod, a carriage movable on the guide rod and having operating devices ineluding a pinion to engage the rack, means for throwing the pinion into and out of engagement with the rack, and a mandrel detachably associated with the carriage and longitudinally shifted and rotated by the latter, the mandrel being disposed in operative osition to the tubing components and feedmg devices to receive the several components, an also removably held at one ex tremity by'a part of the carriage.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. a

SALVATORE SCOGNAMILLO. Witnesses:

AUeUs'ro P. STILLI, ANTONINO DE ANGELI. 

